Supernatural, Season 6

Dean:
If you want forgiveness, find a priest.

Samuel:
I just want you to understand.

Dean:
Oh, I understand. That you're a liar. You talk about putting blood first - which is funny 'cause you sound just like my dad - difference is, he actually did!

Samuel:
I am putting blood first.

Dean:
Oh, give me a break.

Samuel:
Mary is my blood, my daughter! Don't come at me like I sold you out, Dean. You sold out your own mother! It was her or Sam and you chose Sam, plain and simple.

Dean:
Oh, that is such crap. You wanna know what really happened? You chose a demon over your own grandsons!

Samuel:
See it how you want. I don't even know what Sam is. And you want me to protect him? And you? You're a stranger. No, really, tell me - what exactly are you supposed to be to me?

Dean:
I'll tell you who I am. I'm the guy you never wanna see again. 'Cause I'll make it out of here, trust me. And the next time you see me, I'll be there to kill you.

Samuel:
Don't think there's gonna be a next time.

Dean:
Whatever gets you though the night.